There are so many websites, podcasts and books that offer a wealth of insight, strategies and tools about living with ADHD and getting organized.
These are a few of my favorites:
Driven to Distraction by Dr. Edward Hallowell
Taking Charge Of ADHD by Dr. Russell A. Barkley
Organizing the Disorganized Child, by Martin Kutscher & Marcella Moran
ADD-Friendly Ways to Organize Your Life, by Judith Kolberg & Kathleen G. Nadeau
Why will No One Play With Me?, by Caroline Maguire
(a book about social skills for people of all ages)